(19)

(11)

EP 0 836 585 A1

(12)

(43) Date of publication: 22.04.1998 Bulletin 1998/17 (21) Application number: 96913404.0 (22) Date of filing: 10.05.1996

(51) International Patent Classification (IPC):  C02F 3/ 04( . ) C02F 3/ 28( . ) C02F 3/ 06( . ) C02F 3/ 30( . ) (86) International application number: PCT/CA1996/000298 (87) International publication number: WO 1996/035643 (14.11.1996 Gazette 1996/50)

(84) Designated Contracting States: BE CH DE ES FI FR GB IE IT LI NL (30) Priority: 11.05.1995 CA 19952149202 (71) Applicant: Premier Tech Inc. Rivière-du-Loup, Québec G5R 4C9 (CA)

(72) Inventors: GOUPIL, Patrick Rivière-du-Loup, Québec G5R 1L2 (CA) PELLETIER, Martin Rivière-du-Loup, Québec G5R 2G5 (CA) SIMONEAU, Rémy Rivière-du-Loup, Québec G5R 4R9 (CA) TALBOT, Claude Notre-Dame-du-Portage, Québec G0L 1Y0 (CA) TALBOT, Pierre Notre-Dame-du-Portage, Québec G0L 1Y0 (CA) (74) Representative: Hotz, Klaus, Dipl.-El.-Ing./ETH Patentanwalt  c/o OK pat AG Hinterbergstrasse 36 Postfach 5254 6330 Cham 6330 Cham (CH)